<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Promise.reject</title>
</head>
<body>
    <script>
        // Promise.reject 返回的结果始终为『失败的』Promise 对象
        console.log(Promise.reject(123));
        console.log(Promise.reject(Promise.resolve('OK')));
    </script>
</body>
</html>